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    • 12. 发明申请
    • Ofdm Receiver, Integrated Circuit And Receiving Method
    • OFDM接收机,集成电路和接收方法
    • US20080165871A1
    • 2008-07-10
    • US11885042
    • 2006-02-28
    • Akira KisodaNoritaka IguchiKoji Setoh
    • Akira KisodaNoritaka IguchiKoji Setoh
    • H04L27/26
    • H04L25/0232
    • To improve the reception performance of a mobile receiver for a digital broadcasting by OFDM method, the present invention focuses on the arrangement of the SP signals. The present invention performs oblique interpolation in such a direction that a symbol number increases by one and a carrier number decreases by three with respect to a position of each Scattered Pilot Signal to interpolate a first signal whose channel characteristics have not been obtained, and then performs, in a frequency axis direction, frequency axis interpolation to interpolate channel characteristics of a second signal whose channel characteristics have not been obtained, using the estimated channel characteristics and the interpolated channel characteristics.
    • 为了通过OFDM方式提高数字广播的移动接收机的接收性能,本发明着重于SP信号的配置。 本发明在符号数增加1的方向上执行斜插补,并且相对于每个分散导频信号的位置减少三个载波,以内插未获得其信道特性的第一信号,然后执行 在频率轴方向上,使用估计的信道特性和内插的信道特性,对频道特性未获得的第二信号的信道特性进行频率插值。
    • 13. 发明授权
    • Reception device, integrated circuit, and reception method
    • 接收设备,集成电路和接收方式
    • US08462900B2
    • 2013-06-11
    • US12919303
    • 2009-02-20
    • Noritaka IguchiTomohiro Kimura
    • Noritaka IguchiTomohiro Kimura
    • H04B7/10H04L1/02
    • H04L25/03159H04L25/03821H04L27/2647H04L2025/03414
    • An OFDM demodulation unit 13 transforms transmission signals in the time domain into demodulation vectors Y in the frequency domain; an equalization unit 14 estimates channel response vectors H′ based on the demodulation vectors Y, and calculates equalization vectors X′ by equalizing the demodulation vectors Y based on the estimated channel response vectors H′; and an interference removal unit 15 calculates error component vectors indicating error components pertaining to ISI and ICI related to the demodulation vectors Y, based on the equalization vectors X′ and the channel response vectors H′, generates demodulation vectors Y′ by removing the error component vectors from the demodulation vectors Y, and outputs the generated demodulation vectors Y′.
    • OFDM解调部13将时域的发送信号变换为频域的解调矢量Y; 均衡单元14基于解调矢量Y估计信道响应向量H',并且通过基于所估计的信道响应向量H'均衡解调向量Y来计算均衡矢量X'; 并且干扰去除单元15基于均衡矢量X'和信道响应向量H'计算指示与解调矢量Y相关的ISI和ICI的误差分量的误差分量矢量,通过去除误差分量来产生解调矢量Y' 解调矢量Y的矢量,并输出生成的解调矢量Y'。
    • 14. 发明申请
    • RECEPTION DEVICE, INTEGRATED CIRCUIT, AND RECEPTION METHOD
    • 接收装置,集成电路和接收方法
    • US20110038447A1
    • 2011-02-17
    • US12919303
    • 2009-02-20
    • Noritaka IguchiTomohiro Kimura
    • Noritaka IguchiTomohiro Kimura
    • H04L25/08
    • H04L25/03159H04L25/03821H04L27/2647H04L2025/03414
    • An OFDM demodulation unit 13 transforms transmission signals in the time domain into demodulation vectors Y in the frequency domain; an equalization unit 14 estimates channel response vectors H′ based on the demodulation vectors Y, and calculates equalization vectors X′ by equalizing the demodulation vectors Y based on the estimated channel response vectors H′; and an interference removal unit 15 calculates error component vectors indicating error components pertaining to ISI and ICI related to the demodulation vectors Y, based on the equalization vectors X′ and the channel response vectors H′, generates demodulation vectors Y′ by removing the error component vectors from the demodulation vectors Y, and outputs the generated demodulation vectors Y′.
    • OFDM解调部13将时域的发送信号变换为频域的解调矢量Y; 均衡单元14基于解调矢量Y估计信道响应向量H',并且通过基于所估计的信道响应向量H'均衡解调向量Y来计算均衡矢量X'; 并且干扰去除单元15基于均衡矢量X'和信道响应向量H'计算指示与解调矢量Y相关的ISI和ICI的误差分量的误差分量矢量,通过去除误差分量来产生解调矢量Y' 解调矢量Y的矢量,并输出生成的解调矢量Y'。